Wide application: works with all 1.5V, AA, AAA, C, D batteries, button cell and 9V batteries. Accurate and easy to read: the analog display needle moves on a calibrated code scale color to quickly indicate good status. (green), & quot; weak & quot; (yellow) and & quot; replace / recharge the battery & quot; (red) to recognize. Easy to carry: small, easy to carry, can be used anytime anywhere to quickly test battery capacity. No electricity: No batteries are required for operation, making it easy to use. Usage: Perfect for people who regularly use regular or rechargeable batteries. Size: 11.1*6.05*2.6cm/5.26*5.39*2.34cm/11.3 x 6.4 x 3cm Color: black Material: ABS Notes: 1. Please allow 1-3mm differences due to manual measurement, thank you for your understanding! 2. Please note that due to the difference between different monitors, the picture may not reflect the actual color of the item. Package List: 1 x Battery Tester